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306 results on '"Isnard, J."'

10. Recommandations françaises sur l’électroencéphalogramme

Author

André-Obadia, N., Sauleau, P., Cheliout-Heraut, F., Convers, P., Debs, R., Eisermann, M., Gavaret, M., Isnard, J., Jung, J., Kaminska, A., Kubis, N., Lemesle, M., Maillard, L., Mazzola, L., Michel, V., Montavont, A., N’Guyen, S., Navarro, V., Parain, D., Perin, B., Rosenberg, S.D., Sediri, H., Soufflet, C., Szurhaj, W., Taussig, D., Touzery – de Villepin, A., Vercueil, L., and Lamblin, M.D.

Published
2014
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13. Surgical Anatomy of the Insula

Author

Guenot, M., Isnard, J., Sindou, M., Pickard, J. D., editor, Di Rocco, C., editor, Dolenc, V. V., editor, Fahlbusch, R., editor, Lobo Antunes, J., editor, Sindou, M., editor, de Tribolet, N., editor, Tulleken, C. A. F., editor, and Vapalahti, M., editor

Published
2004
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43. Technical refinements for validating functional MRI-based neuronavigation data by electrical stimulation during cortical language mapping

Author

Jacques Guyotat, Bret P, Isnard J, Fabien Schneider, and Francesco Signorelli

Subjects
Male, medicine.medical_specialty, Neuronavigation, Language mapping, Resection, Text mining, Functional neuroimaging, medicine, Humans, Language, Cerebral Cortex, Brain Mapping, medicine.diagnostic_test, business.industry, Brain Neoplasms, Reproducibility of Results, General Medicine, Glioma, Middle Aged, Magnetic Resonance Imaging, Electric Stimulation, Surgery, Tumor surgery, Female, Neurology (clinical), Radiology, Tumor removal, business, Functional magnetic resonance imaging
Abstract

Preoperative functional neuroimaging techniques represent an appealing method to localize language areas in tumor surgery, but their reliability still needs to be confirmed by accurate comparison with more invasive but validated mapping techniques like intraoperative electrical cortical stimulation. Two patients harboring a glioma involving speech areas underwent mapping of language function by preoperative functional magnetic resonance imaging (fMRI), whose results were integrated into the neuronavigation device, and by intraoperative electrical stimulation mapping (ESM). The utilization of neuronavigation allowed us to estimate the degree of spatial correspondence between language areas detected by the two techniques. Language areas identified by functional magnetic resonance imaging on the cerebral cortex exposed during surgery corresponded to those identified by invasive mapping in both patients. It was possible to achieve a gross total tumor removal while respecting language areas in both cases, with no permanent postoperative phasic aggravation. The concordance of results between pre- and intra-operative mapping techniques in our patients indicates that preoperative fMRI language mapping may prove useful when planning the resection of intracerebral lesions in language areas. However, accurate neurofunctional imaging protocols and image analysis are crucial to obtain a preoperative language mapping that is in agreement with ESM findings.

Published
2003

44. Intraoperative electrical stimulation mapping as an aid for surgery of intracranial lesions involving motor areas in children

Author

Fabien Schneider, Francesco Signorelli, C. Mottolese, Jacques Guyotat, Isnard J, and G. D’Acunzi

Subjects
Male, medicine.medical_specialty, Adolescent, Stimulation, Neurosurgical Procedures, Lesion, Intraoperative Period, Medicine, Humans, High current, Child, Paresis, Brain Diseases, Brain Mapping, Motor area, business.industry, Motor Cortex, General Medicine, Magnetic Resonance Imaging, Motor Pathways, Electric Stimulation, Surgery, Child, Preschool, Pediatrics, Perinatology and Child Health, Intracranial lesions, Female, Neurology (clinical), Neurosurgery, medicine.symptom, business, Tomography, Emission-Computed
Abstract

We analysed the usefulness of intraoperative electrical stimulation mapping (ESM) for locating motor pathways in pediatric patients harboring cerebral lesions closely related to motor areas. We applied ESM in 17 consecutive pediatric patients operated on under general anesthesia. It was possible to locate motor function in 15 patients and in all children 5 years old and younger, as well as in all patients presenting with severe motor deficits, using relatively high current intensities. Intraoperative seizures occurred in 20% of our patients. A macroscopically complete removal of the lesion was carried out in 12 cases out of 17 with no definitive postoperative aggravation. Motor function improved for all patients presenting preoperatively with a severe paresis. In our experience ESM revealed to be an useful tool for allowing us to push the resection of any lesion infringing on eloquent cortex up to the limit of functional areas, even in cases in very young and severely paretic children.

Published
2003

45. A9/A700 Contournement Sud Autoroutier de Montpellier : Vendargues – Saint-Jean-de-Védas (Hérault), état des connaissances et approche du potentiel archéologique: Etude documentaire AFAN

Author

Rinalducci, Véronique, Bourgarel, N., Isnard, J., Molinier, A., Laboratoire d'archéologie médiévale méditerranéenne (LAMM), Centre National de la Recherche Scientifique (CNRS)-Université de Provence - Aix-Marseille 1, SRA Languedoc-Roussillon, and Université de Provence - Aix-Marseille 1-Centre National de la Recherche Scientifique (CNRS)

Subjects
cartographie diachronique, [SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory, Etude documentaire, inventaire des sites, prospection, recensement chemins
Published
1998

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